Photos

Mark Zuckerberg (R), founder and CEO of Facebook, and wife Priscilla Chan arrive on the red carpet during the 2nd annual Breakthrough Prize Award in Mountain View, California in this November 9, 2014 file photo. Facebook Inc Chief Executive Mark Zuckerberg and his wife, Priscilla Chan, are expecting a baby girl, he said on his Facebook page on July 31, 2015. REUTERS/Stephen Lam/Files